Gems in Hellenistic and Roman Jewellery of Northern Greece: An investigation from the Collections of the Archaeological Museum of Thessaloniki, Greece

One of the challenges facing gemologists today is the detec- tion of low temperature (below 1200°C)

Museums are unique repositories of international treasures. They are also places of active research,

The Salininha emerald deposit located in the municipality of Pilão Arcado, Bahia State, represents